Structure and Properties of Silumin Castings Solidified Under Pressure After Heat Treatment

Stancek, L.; Vanko, Branislav; Батышев, А И

doi:10.1007/s11041-014-9730-0

Cited by 6 publications

(3 citation statements)

References 1 publication

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“…6b). This pore formation confirmed the studies of Brueckner-Foit [16] and Puncreobutr [23] of Fe-needles being surrounded by pores and acting as porosity nucleation sites.…”

Section: Resultssupporting

confidence: 87%

“…On the other hand, with a slower cooling rate, polyhedral/star-like shaped α-particles known as the sludge phases may nucleate as primary particles [16,17,[20][21][22][23]. According to the research work of [21], sludgecontrols the formation of porosity to some extent when the porosity at the fracture surfaces increases in Fe-rich alloys, modified to the sludge.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Manganese on Fe-Rich Intermetallic Phases in Progressive Secondary AlSi7Mg0.6 Alloy

Pastierovičová¹,

Kuchariková²,

Tillová³

et al. 2022

Applied Engineering Letters

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The contribution describes the major problem with the secondary (recycled) alloys as the presence of unwanted elements due to the remelting of Alscrap negatively affecting the quality of AlSi7Mg0.6 cast alloy. Iron is the most harmful impurity in the secondary Al-Si alloys, leading to the formation of β-Fe-rich (Al5FeSi) intermetallic phases that promotes forming of casting defects such as porosity and shrinkage by its needle-like shape. Suitable neutralizer alloying elements, such as Mn, influence the formation of Fe-needle-like phases and lead to the formation of less harmful Mncontaining α-Fe-rich phases. To optimize the morphology and properties of alloys, it is necessary to study the effects of individual alloying elements. Therefore, this study is focused on the effect of Mn addition on Fe-rich intermetallic phases and casting defects, thus the evaluation of its shape and distribution in AlSi7Mg0.6 secondary alloy.

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“…6b). This pore formation confirmed the studies of Brueckner-Foit [16] and Puncreobutr [23] of Fe-needles being surrounded by pores and acting as porosity nucleation sites.…”

Section: Resultssupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

The Effect of Manganese on Fe-Rich Intermetallic Phases in Progressive Secondary AlSi7Mg0.6 Alloy

Pastierovičová¹,

Kuchariková²,

Tillová³

et al. 2022

Applied Engineering Letters

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show abstract

“…The heat-treatable nature of AlSi7Mg0.3 also enables further improvement of its mechanical properties through solution heat treatment and ageing. Despite its advantages, the presence of Fe and other impurities in the recycled aluminium scrap can negatively impact the microstructure and properties of AlSi7Mg0.3 alloys, thus, requiring careful selection of raw materials and precise control of casting conditions [5][6][7][8].…”

Section: The Influence Of Mn Addition On Corrosion Resistance In Seco...mentioning

confidence: 99%

The Influence of Mn Addition on Corrosion Resistance in Secondary Aluminium Alloy AlSi7Mg0.3 after the Heat Treatment

ŠURDOVÁ

2023

Quality Production Improvement and System Safety

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Abstract. This paper aims to study the secondary aluminium alloy AlSi7Mg0.3 with higher Fe content after heat treatment. The addition of Mn is also investigated. The quantitative analysis was performed to evaluate the effect of higher Fe content on the amount and shape of platelet-like Fe-rich intermetallic phases. As a method of corrosion resistance testing an immersion test in 3.5% NaCl was used. This test was done in order to evaluate the influence of higher Fe content and Mn addition in heat-treated AlSi7Mg0.3 alloys. The results show that the Mn addition increases the corrosion resistance of AlSi7Mg0.3 alloys, but not significantly. AlSi7Mg0.3 alloys have numerous uses within the automobile and other sectors.

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Effect of high pressure processing in the formation of castings of aluminum alloys

Батышев

Zadiranov

Zaya

2020

J. Phys.: Conf. Ser.

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The effect of high pressure on the formation conditions of aluminum castings has been investigated. It was established experimentally that the crystallization of castings under high mechanical pressure proceeds at a higher temperature difference across the cross section than at atmospheric pressure. The cooling rate of a cylindrical casting in various zones on the section, which is characteristic for cooling alloy in the crystallization range, is determined. The formula for calculating the solidification time of a casting and the time of its holding pressure during piston compression is recommended. The influence of the scale factor on the solidification time of cylindrical castings is considered. It is shown that with increasing height at a constant diameter of the casting, the relationship between the solidification time and diameter of the casting is linear. It has been experimentally established that the solidification coefficient of an alloy depends on its thermophysical properties of the alloy and the applied pressure. Its value increases with decreasing silicon content in the alloy and increasing pressure. The pressure significantly reduces the difference in the values of the solidification coefficient of castings from alloys of different compositions.

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Structure and Properties of Silumin Castings Solidified Under Pressure After Heat Treatment

Cited by 6 publications

References 1 publication

The Effect of Manganese on Fe-Rich Intermetallic Phases in Progressive Secondary AlSi7Mg0.6 Alloy

The Effect of Manganese on Fe-Rich Intermetallic Phases in Progressive Secondary AlSi7Mg0.6 Alloy

The Influence of Mn Addition on Corrosion Resistance in Secondary Aluminium Alloy AlSi7Mg0.3 after the Heat Treatment

Effect of high pressure processing in the formation of castings of aluminum alloys

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